Myanmar's Supreme Court rejected Monday a special appeal by the country's ousted leader Aung San Suu Kyi against her conviction in a case in which she was charged with corruption for allegedly receiving gold and thousands of dollars as a bribe from a former political colleague, a legal official said.

Suu Kyi, 78, was arrested on Feb. 1, 2021, when the military seized power from her elected government.

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She is serving prison sentences totaling 27 years after being convicted of a string of criminal charges that her supporters and independent analysts say were concocted to discredit her and legitimize the military's seizure of power.

Monday's trial was closed to the media diplomats and spectators. Suu Kyi's lawyers were barred by a gag order from talking about it. A legal official relayed the court's decision to The Associated Press while insisting on anonymity for fear of being punished by the authorities

Also read: Myanmar Supreme Court agrees to hear some Suu Kyi appeals

Suu Kyi was convicted, in the special appeal case, of receiving $600,000 and seven gold bars in 2017-18 from Phyo Min Thein, the former chief minister of Yangon, the country's biggest city. He is also a former senior member of her political party.

She was sentenced to five years in prison in April last year after being found guilty of bribery. Her lawyers, before they were served with gag orders in late 2021, said she rejected all the corruption allegations against her as "absurd."

Special appeals are usually the final stage of the appeals process in Myanmar. However, they can be re-examined by the Special Appeals Tribunal or the Plenary Tribunal if the chief justice sees an aspect of public interest.

Initial appeals filed by her lawyers in most of her cases have already been rejected at least once by the lower court. Appeals of her convictions on election fraud, breaching the country's official secrets act and five other corruption charges are still being processed, the legal official said.

Suu Kyi's legal team has faced several hurdles, including being unable to meet with her to receive her instructions.

Also read: Myanmar junta dissolves Suu Kyi's party, much of opposition

They have applied at least six times for permission to meet with her since they last saw her in person in December 2022, but have not received any response, the legal official said.

Myanmar has been in turmoil since the army's 2021 takeover, which led to nationwide peaceful protests that the military government suppressed with deadly force, triggering widespread armed resistance that some U.N. officials characterized as civil war.